Unregister Acronis VSS

Hello all,
we had installed Acronis True Image Server 8.0 on the server. We uninstalled it in cause installing of VMware converter standalone 4.01 (occure confict).

But now when we run VMware Converter, we get error message about VSS. The problem is, in my oppinion, in this:
C:\>vssadmin list providers
vssadmin 1.0 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001 Microsoft Corp.

Provider Name: Microsoft Software Shadow Copy provider 1.0
Provider type: System
Provider ID: {b5946137-7b9f-4925-af80-51abd60b20d5}
Version: 1.0.0.7

Provider name: Acronis VSS HW Provider
Provider type: Hardware
Provider ID: {f5dbcc43-b847-494e-8083-f030501da611}
Version: 1.0

C:\>

Because VMware want use Acronis VSS but it is uninstalled...

How I unregister VSS provider Acronis?

Thanks
Michell